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Audio Transformers:

2 Ohm to 80K Ohm; 20Hz to 25KHz; 3 watt at 1KHz

SURFACE MOUNT
PICO surface mount units utilize materials and methods to withstand extreme temperatures of vapor phase, I.R., and other reflow procedures without degradation of electrical or mechanical characteristics. 

Specifications

  • MIL-PRF-27: All units manufactured to MIL-PRF-27, Grade 5, Class S. 
  • FREQUENCY RESPONSE: ± 3db, 20 Hz-25 KHz at 1.0 Milliwatt. 
  • MAXIMUM DISTORTION: 5% with Rated Power Level at 1 KHz and 300 Hz. 10% Distortion at 20 Hz. 
  • DIELECTRIC STRENGTH: All units tested at 200 V RMS. 
  • INSULATION RESISTANCE: Greater than 10,000 Megohms at 300 V DC. 
  • WEIGHT: 28 Grams 
  • OPERATING TEMPERATURE: -55º C to +130º C 
  • TERMINALS: Solderability per MIL-STD-202, Method 208. 
  • THERMAL SHOCK: 25 Cycles, Method 107, MIL-STD-202, Test Condition -55º C to +130º C.
  • MOISTURE SENSITIVITY LEVEL: MSL3


 
 

 
 
Audio Transformers: 2 Ohm to 80K Ohm; 20Hz to 25KHz; 3 watt at 1KHz 
Pico
Part
Number
Prim
Imped
Ohms
Secondary
Impedance
Ohms
Split
Windings
Power Watts
Primary
Unbal
DC
Current
ma
Prim
DC
Resist
Ohms
Secondary
DC
Resistance
Ohms
Turns Ratio
Prime/Sec

Pico
Price
1-9
***

(US $)

SER
PAR
1KHz
and
higher
300
Hz
and
higher
75
Hz
and
higher
SER
CONN
PAR
CONN
SEC
SER
CONN
SEC
PAR
CONN
84003
84005
84010
84015
84018
20 ct
20 ct
32 ct
40 ct
48 ct
8 ct
20 ct
32 ct
40 ct
16 ct
2
5
8
10
4
3.0
3.0
3.0
3.0
3.0
2.0
2.0
2.0
2.0
2.0
.006
.006
.006
.006
.006
22
22
17.5
16
14.5
1.6
1.6
2.56
3.2
3.84
.8
2
3.2
4
1.6
.2
.5
.8
1
.4
1.58:1
1:1
1:1
1:1
1.73:1
3.16:1
2:1
2:1
2:1
3.46:1
58.98
58.95
58.95
58.98
58.98
84020
84025
84028
84030
84035
50 ct
80 ct
100 ct
100 ct
120 ct
50 ct
32 ct
40 ct
100 ct
12.8 ct
12.5
8
10
25
3.2
3.0
3.0
3.0
3.0
3.0
2.0
2.0
2.0
2.0
2.0
.006
.006
.006
.006
.006
14
11
10
10
9
4
6.4
8
8
9.6
5
3.2
4
10
1.3
1.25
.8
1
2.5
.32
1:1
1.58:1
1.58:1
1:1
3.06:1
2:1
3.16:1
3.16:1
2:1
26.12:1
58.98
58.98
58.98
58.98
58.98
 
Pico
Part
Number
Prim
Imped
Ohms
Secondary
Impedance
Ohms
Split
Windings
Power Watts
Primary
Unbal
DC
Current
ma
Prim
DC
Resist
Ohms
Secondary
DC
Resistance
Ohms
Turns Ratio
Prime/Sec
Pico
Price
1-9
***

(US $)
SER
PAR
1KHz
and
higher
300
Hz
and
higher
75
Hz
and
higher
SER
CONN
PAR
CONN
SEC
SER
CONN
SEC
PAR
CONN
84040
84045
84050
84055
84060
120 ct
120 ct
150 ct
150 ct
150 ct
60 ct
120 ct
12 ct
50 ct
100 ct
15
30
3
12.5
25
3.0
3.0
3.0
3.0
3.0
2.0
2.0
2.0
2.0
2.0
.006
.006
.006
.006
.006
9
9
8
8
8
9.6
9.6
12
12
12
6
12
1.2
5
10
1.5
3
.3
1.25
2.5
1.41:1
1:1
3.54:1
1.73:1
1.22:1
2.83:1
2:1
7.08:1
3.46:1
2.44:1
58.98
58.98
58.98
58.98
58.98
84065
84070
84075
84080
84085
150 ct
150 ct
200 ct
300 ct
300 ct
150 ct
600 ct
200 ct
12 ct
50 ct
37.5
150
50
3
12.5
3.0
3.0
3.0
3.0
3.0
2.0
2.0
2.0
2.0
2.0
.006
.006
.006
.006
.006
8
8
7
5.5
5.5
12
12
16
24
24
15
60
20
1.2
5
3.75
15
5
.3
1.25
1:1
1:2
1:1
5:1
2.45:1
2:1
1:1
2:1
10:1
4.9:1
58.98
58.98
58.98
58.98
58.98
84090
84095
84100
84105
84110
300 ct
300 ct
300 ct
320 ct
400 ct
150 ct
300 ct
600 ct
12.8 ct
40 ct
37.5
75
150
3.2
10
3.0
3.0
3.0
3.0
3.0
2.0
2.0
2.0
2.0
2.0
.006
.006
.006
.006
.006
5.5
5.5
5.5
5.5
5
24
24
24
25.6
32
15
30
60
1.3
4
3.75
7.5
15
.32
1
1.41:1
1:1
1:1.41
5:1
3.16:1
2.83:1
2:1
1.41:1
10:1
6.32:1
58.98
58.98
58.98
58.98
58.98
84115
84120
84125
84130
84135
400 ct
400 ct
400 ct
400 ct
400 ct
120 ct
200 ct
400 ct
1000 ct
2000 ct
30
50
100
250
500
3.0
3.0
3.0
3.0
3.0
2.0
2.0
2.0
2.0
2.0
.006
.006
.006
.006
.006
5
5
5
5
5
32
32
32
32
32
12
20
40
100
200
3
5
10
25
50
1.83:1
1.41:1
1:1
1:1.58
1:2.24
3.65:1
2.83:1
2:1
1.26:1
1:1.12
58.98
58.98
58.98
58.98
58.98
84140
84142
84144
84145
84147
400 ct
500 ct
500 ct
500 ct
500 ct
4000 ct
12.8 ct
16 ct
50 ct
150 ct
1000
3.2
4
12.5
37.5
3.0
3.0
3.0
3.0
3.0
2.0
2.0
2.0
2.0
2.0
.006
.006
.006
.006
.006
5
4.5
4.5
4.5
4.5
32
40
40
40
40
400
1.3
1.6
5
15
100
.32
.4
1.25
3.75
1:3.16
6.25:1
5.6:1
3.16:1
1.83:1
1:1.58
12.5:1
11.2:1
6.32:1
3.65:1
58.98
58.98
58.98
58.98
58.98
84150
84155
84160
84165
84167
500 ct
*500 ct
500 ct
600 ct
600 ct
500 ct
500 ct
600 ct
12.8 ct
30 ct
125
-
150
3.2
7.5
3.0
3.0
3.0
3.0
3.0
2.0
2.0
2.0
2.0
2.0
.006
.006
.006
.006
.006
4.5
4.5
4.5
4
4
40
40
40
48
48
50
50
60
1.3
3
12.5
-
15
.32
.75
1:1
1:1
1:1.1
6.85:1
4.47:1
2:1
-
1.83:1
13.7:1
8.94:1
58.98
61.47
58.98
58.98
58.98
84170
84175
84180**
84185**
84186**
600 ct
600 ct
600 ct
*600 ct
*600 ct
48 ct
200 ct
600 ct
600 ct
900 ct
12
50
150
-
-
3.0
3.0
3.0
3.0
3.0
2.0
2.0
2.0
2.0
2.0
.006
.006
.006
.006
.006
4
4
4
4
4
48
48
48
48
48
4.8
20
60
60
90
1.2
5
15
-
-
3.54:1
1.73:1
1:1
1:1
1:1.22
7.07:1
3.46:1
2:1
-
-
58.98
58.98
58.98
61.47
61.47
84187**
84190
84195
84200
84205
600 ct
640 ct
700 ct
800 ct
800 ct
1200 ct
12.8 ct
100 ct
12.8 ct
48 ct
300
3.2
25
3.2
12
3.0
3.0
3.0
3.0
3.0
2.0
2.0
2.0
2.0
2.0
.006
.006
.006
.006
.006
4
4
3.5
3.5
3.5
48
51
56
64
64
120
1.3
10
1.3
4.8
30
.32
2.5
.32
1.2
1:1.41
7.07:1
2.65:1
7.91:1
4.08:1
1.41:1
14.14:1
5.29:1
15.8:1
8.16:1
58.98
58.98
58.98
58.98
58.98
84210
84215
84217**
84220
84225
800 ct
900 ct
*900 ct
1000 ct
1000 ct
800 ct
600 ct
900 ct
12 ct
50 ct
200
150
-
3
12.5
3.0
3.0
3.0
3.0
3.0
2.0
2.0
2.0
2.0
2.0
.006
.006
.006
.006
.006
3.5
3
3
3
3
64
72
72
80
80
80
60
90
1.2
5
20
15
-
.3
1.25
1:1
1.22:1
1:1
9.13:1
4.47:1
2:1
2.45:1
-
18.26:1
8.94:1
58.98
58.98
61.47
58.98
58.98
84230
84235
84240
84245
84250
1000 ct
1060 ct
1200 ct
1200 ct
1200 ct
1000 ct
12.8 ct
12.8 ct
500 ct
1200 ct
250
3.2
3.2
125
300
3.0
3.0
3.0
3.0
3.0
2.0
2.0
2.0
2.0
2.0
.006
.006
.006
.006
.006
3
3
3
3
3
80
85
96
96
96
100
1.3
1.3
50
120
25
.32
.32
12.5
30
1:1
9.1:1
9.68:1
1.55:1
1:1
2:1
18.2:1
19.4:1
3.1:1
2:1
58.98
58.98
58.98
58.98
58.98
 
Pico
Part
Number
Prim
Imped
Ohms
Secondary
Impedance
Ohms
Split
Windings
Power Watts
Primary
Unbal
DC
Current
ma
Prim
DC
Resist
Ohms
Secondary
DC
Resistance
Ohms
Turns Ratio
Prime/Sec
Pico
Price
1-9
***

(US $)
SER
PAR
1KHz
and
higher
300
Hz
and
higher
75
Hz
and
higher
SER
CONN
PAR
CONN
SEC
SER
CONN
SEC
PAR
CONN
84255
84260
84265
84270
84275
*1200 ct
1500 ct
1500 ct
*1500 ct
*1500 ct
1200 ct
12 ct
500 ct
600 ct
1500 ct
-
3
125
-
-
3.0
3.0
3.0
3.0
3.0
2.0
2.0
2.0
2.0
2.0
.006
.006
.006
.006
.006
3
2.5
2.5
2.5
2.5
96
120
120
120
120
120
1.2
50
60
150
-
.3
12.5
-
-
1:1
11.18:1
1.73:1
1.58:1
1:1
-
22.36:1
3.46:1
-
-
61.47
58.98
58.98
61.47
61.47
84280
84283
84285
84290
84295
1600 ct
2000 ct
2000 ct
*2000 ct
2000 ct
12.8 ct
8 ct
2000 ct
2000 ct
8000 ct
3.2
2
500
-
2000
3.0
3.0
3.0
3.0
3.0
2.0
2.0
2.0
2.0
2.0
.006
.006
.006
.006
.006
2.5
2.2
2.2
2.2
2.2
128
160
160
160
160
1.3
.8
200
200
800
.32
.2
50
-
200
11.18:1
15.8:1
1:1
1:1
1:2
22.36:1
31.6:1
2:1
-
1:1
58.98
58.98
58.98
61.47
58.98
84297
84300
84305
2500 ct
3000 ct
*3000 ct
2500 ct
3000 ct
3000 ct
625
750
-
3.0
3.0
3.0
2.0
2.0
2.0
.006
.006
.006
2
1.8
1.8
200
240
240
250
300
300
63
75
-
1:1
1:1
1:1
2:1
2:1
-
58.98
58.98
58.98
84310
84312
84314**
84315
84320
3600 ct
4000 ct
4000 ct
4000 ct
*4000 ct
3600 ct
16 ct
600 ct
1000 ct
8000 ct
900
4
150
250
-
2.7
2.5
2.5
2.5
2.5
2.0
2.0
2.0
2.0
2.0
.006
.006
.006
.006
.006
1.7
1.6
1.6
1.6
1.6
288
320
320
320
320
360
1.6
60
100
800
90
.4
15
25
-
1:1
15.8:1
2.58:1
2:1
1:1.41
2:1
31.6:1
5.16:1
4:1
-
58.98
58.98
58.98
58.98
61.47
84325
84330
84335
84340
84345
5000 ct
5000 ct
7500 ct
7500 ct
7500 ct
500 ct
5000 ct
50 ct
100 ct
600 ct
125
1250
12.5
25
150
2.0
2.0
1.3
1.3
1.3
2.0
2.0
1.3
1.3
1.3
.006
.006
.006
.006
.006
1.4
1.4
1.2
1.2
1.2
400
400
600
600
600
50
500
5
10
60
12.5
125
1.25
2.5
15
3.16:1
1:1
12.25:1
8.66:1
3.54:1
6.32:1
2:1
24.5:1
17.32:1
7.07:1 
58.98
58.98
65.41
65.41
65.41
84350
84355
84360
84365
84370
7500 ct
*7500 ct
8000 ct
8000 ct
*8000 ct
2500 ct
7500 ct
12.8 ct
1000 ct
1200 ct
625
-
3.2
250
-
1.3
1.3
1.2
1.2
1.2
1.3
1.3
1.2
1.2
1.2
.006
.006
.006
.006
.006
1.2
1.2
1.1
1.1
1.1
600
600
640
640
640
250
750
1.3
100
120
63
-
.32
25
-
1.73:1
1:1
25:1
2.83:1
2.58:1
3.46:1
-
50:1
5.66:1
-
65.41
70.13
65.41
65.41
70.13
84375
84380
84385
84390
84395
*9000 ct
10,000 ct
10,000 ct
10,000 ct
10,000 ct
9000 ct
12.8 ct
16 ct
100 ct
200 ct
-
3.2
4
25
50
1.1
1.0
1.0
1.0
1.0
1.1
1.0
1.0
1.0
1.0
.006
.006
.006
.006
.006
1.1
1
1
1
1
720
800
800
800
800
900
1.3
1.6
10
20
-
.32
.4
2.5
5
1:1
28:1
25:1
10:1
7.07:1
-
56:1
50:1
20:1
14.14:1
70.13
65.41
65.41
65.41
65.41
84400
84405
84410
84415
84420
10,000 ct
10,000 ct
10,000 ct
10,000 ct
10,000 ct
500 ct
600 ct
1000 ct
1200 ct
1500 ct
125
150
250
300
375
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
.006
.006
.006
.006
.006
1
1
1
1
1
800
800
800
800
800
50
60
100
120
150
12.5
15
25
30
38
4.47:1
4.08:1
3.16:1
2.89:1
2.58:1
8.94:1
8.16:1
6.32:1
5.77:1
5.16:1
65.41
65.41
65.41
65.41
65.41
84425
84430
84435
84440
84445
10,000 ct
10,000 ct
10,000 ct
10,000 ct
*10,000 ct
2000 ct
5000 ct
7500 ct
10,000 ct
10,000 ct
500
1250
1875
2500
-
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
.006
.006
.006
.006
.006
1
1
1
1
1
800
800
800
800
800
200
500
750
1000
1000
50
125
188
250
-
2.24:1
1.41:1
1.16:1
1:1
1:1
4.47:1
2.83:1
2.31:1
2:1
-
65.41
65.41
65.41
65.41
70.13
84450
84452
84455
84460
84465
15,000 ct
15,000 ct
15,000 ct
15,000 ct
*15,000 ct
400 ct
500 ct
600 ct
10,000 ct
15,000 ct
100
125
150
2500
-
.66
.66
.66
.66
.66
.66
.66
.66
.66
.66
.006
.006
.006
.006
.006
.8
.8
.8
.8
.8
1200
1200
1200
1200
1200
40
50
60
1000
1500
10
12.5
15
250
-
6.12:1
5.48:1
5:1
1.22:1
1:1
12.25:1
10.95:1
10:1
2.45:1
-
65.41
65.41
65.41
65.41
70.13
84470
84475
84480
84485

84490
15,000 ct
16,000 ct
20,000 ct
20,000 ct
20,000 ct
15,000 ct
1000 ct
500 ct
600 ct
800 ct
3750
250
125
150
200
.66
.62
.5
.5
.5
.66
.62
.5
.5
.5
.006
.006
.006
.006
.006
.8
.8
.7
.7
.7
1200
1280
1600
1600
1600
1500
100
50
60
80
375
25
12.5
15
20
1:1
4:1
6.32:1
5.77:1
5:1
2:1
8:1
12.6:1
11.55:1
10:1
65.41
65.41
70.13
70.13
70.13
Pico
Part
Number
Prim
Imped
Ohms
Secondary
Impedance
Ohms
Split
Windings
Power Watts
Primary
Unbal
DC
Current
ma
Prim
DC
Resist
Ohms
Secondary
DC
Resistance
Ohms
Turns Ratio
Prime/Sec
Pico
Price
1-9
***

(US $)
SER
PAR
1KHz
and
higher
300 Hz
and
higher
75 Hz
and
higher
SER
CONN
PAR
CONN
SEC
SER
CONN
SEC
PAR
CONN
84495
84500
84505
84510
84515
20,000 ct
20,000 ct
20,000 ct
*20,000 ct
25,000 ct
1000 ct
5000 ct
10,000 ct
20,000 ct
500 ct
250
1250
2500
-
125
.5
.5
.5
.5
.4
.5
.5
.5
.5
.4
.006
.006
.006
.006
.006
.7
.7
.7
.7
.6
1600
1600
1600
1600
2000
100
500
1000
2000
50
25
125
250
-
12.5
4.47:1
2:1
1.41:1
1:1
7.07:1
8.94:1
4:1
2.83:1
-
14.14:1
70.13
70.13
70.13
72.87
70.13
84520
84525
84530
84532
84534
25,000 ct
30,000 ct
30,000 ct
30,000 ct
30,000 ct
1000 ct
50 ct
1200 ct
500 ct
200 ct
250
12.5
300
125
50
.4
.33
.33
.33
.33
.4
.33
.33
.33
.33
.006
.006
.006
.006
.006
.6
.6
.6
.6
.6
2000
2400
2400
2400
2400
100
5
120
50
20
25
1.25
30
12.5
5
5:1
24.5:1
5:1
7.7:1
12.2:1
10:1
49:1
10:1
15.5:1
24.5:1
70.13
72.87
72.87
72.87
72.87
84535
84540
84545
84550
84555
30,000 ct
30,000 ct
*30,000 ct
40,000 ct
40,000 ct
5000 ct
10,000 ct
30,000 ct
400 ct
2000 ct
1250
2500
-
100
500
.33
.33
.33
.25
.25
.33
.33
.33
.25
.25
.006
.006
.006
.006
.006
.6
.6
.6
.5
.5
2400
2400
2400
3200
3200
500
1000
3000
40
200
125
250
-
10
50
2.45:1
1.73:1
1:1
10:1
4.47:1
4.9:1
3.46:1
-
20:1
8.94:1
72.87
72.87
78.15
78.15
78.15
84560
84565
84570
84575
84577
40,000 ct
40,000 ct
*40,000 ct
50,000 ct
50,000 ct
4000 ct
20,000 ct
40,000 ct
200 ct
500 ct
1000
5000
-
50
125
.25
.25
.25
.2
.2
.25
.25
.25
.2
.2
.006
.006
.006
.006
.006
.5
.5
.5
.4
.4
3200
3200
3200
4000
4000
400
2000
4000
20
50
100
500
-
5
12.5
3.16:1
1.41:1
1:1
15.8:1
10:1
6.32:1
2.83:1
-
31.6:1
20:1
78.15
78.15
87.14
87.14
87.14
84578
84579
84580
84585
84587
50,000 ct
50,000 ct
60,000 ct
62,500 ct
80,000 ct
600 ct
50,000 ct
15,000 ct
50 ct
15,000 ct
150
12,500
3750
12.5
3750
.2
.2
.16
.16
.12
.2
.2
.16
.16
.12
.006
.006
.006
.006
.006
.4
.4
.4
.4
.3
4000
4000
4800
5000
6400
60
5000
1500
5
1500
15
1250
375
1.25
375
9.13:1
1:1
2:1
35.4:1
2.3:1
18.26:1
2:1
4:1
70.7:1
4.6:1
87.14
87.14
94.11
94.11
94.11

 

 

 

*Includes electrostatic shield 
 
**Miniaturized telephoned coupling application   
***Discount Prices: 
  • 1-9 Net; 
    10-24 less 10%; 
    25-49 less 16%; 
    50-99 less 23%; 
    100-499 less 30% 
Ordering Instructions: 
  • No minimum. 
    Net 30 days F.O.B. Pelham, NY 

    Delivery--stock to one week for sample orders.

Features
  • Extreme resistance to thermal shock. 
  • Ultra miniature size. 
  • PICO is approved QPL source (MIL-PRF-27). 
  • Magnetic shields available. 
  • Electrostatic shielding can be added. 
  • Variation of standard designs available. 
  • Primary and secondary windings can be used either as input or output. 
  • Every unit in this catalog can be made with a 300 thermal cycle guarantee using PICO's special SR construction. Contact factory for details. 
Schematics 
for Transformers 
with Electrostatic Shield 
Schematics 
for Transformers 
with Split Secondaries 


Click Here for Thru Hole Version of 84000 Series 

 

RECOMMENDED LAND PATTERN DIMENSIONS

 


For immediate engineering assistance or to place an order:
Call Toll Free: 800-431-1064

PICO Electronics, Inc.

143 Sparks Ave. Pelham, NY 10803-1810
Tel: 914-738-1400 or Fax: 914-738-8225

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